CN112287529B - Automatic arrangement method for photovoltaic array and automatic arrangement method for photovoltaic power station - Google Patents
Automatic arrangement method for photovoltaic array and automatic arrangement method for photovoltaic power station Download PDFInfo
- Publication number
- CN112287529B CN112287529B CN202011116975.2A CN202011116975A CN112287529B CN 112287529 B CN112287529 B CN 112287529B CN 202011116975 A CN202011116975 A CN 202011116975A CN 112287529 B CN112287529 B CN 112287529B
- Authority
- CN
- China
- Prior art keywords
- array
- cable
- photovoltaic
- brackets
- bus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000003491 array Methods 0.000 claims description 18
- 238000004364 calculation method Methods 0.000 claims description 13
- 238000004590 computer program Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims 2
- 239000011295 pitch Substances 0.000 description 18
- 230000001419 dependent effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/18—Network design, e.g. design based on topological or interconnect aspects of utility systems, piping, heating ventilation air conditioning [HVAC] or cabling
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Geometry (AREA)
- Computer Hardware Design (AREA)
- General Engineering & Computer Science (AREA)
- Evolutionary Computation (AREA)
- Computational Mathematics (AREA)
- Pure & Applied Mathematics (AREA)
- Mathematical Optimization (AREA)
- Mathematical Analysis (AREA)
- Computer Networks & Wireless Communication (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention provides an automatic arrangement method of a photovoltaic array and an automatic arrangement method of a photovoltaic power station, wherein the automatic arrangement method of the photovoltaic array comprises the following steps: acquiring array information parameters, wherein the array information parameters comprise array capacity, and the length, width and spacing of a group string; generating unit modules, wherein the length of the unit modules is determined based on the length and the spacing of the group strings, the width of the unit modules is determined based on the width and the spacing of the group strings, and the number of the unit modules is determined based on the array capacity; generating a first array of first preset shapes based on the unit modules; performing preset bus zone dividing operation on the first array to obtain a first array with divided bus zones; photovoltaic device arrangement information is generated based on the first array of divided bus areas, wherein the photovoltaic device includes a bus box, an inverter, and a transformer. The invention can realize automatic arrangement of the photovoltaic array, improve the controllability of the cable cost and improve the design efficiency of the photovoltaic array.
Description
Technical Field
The invention relates to the technical field of photovoltaic power generation, in particular to an automatic arrangement method of a photovoltaic array and an automatic arrangement method of a photovoltaic power station.
Background
A photovoltaic array is a direct current power generation unit composed of several photovoltaic modules or panels mechanically and electrically assembled together and having a fixed support structure. In the prior art, the capacity occupied by each array is generally determined according to the experience of a designer and the size of a power station, then the number of strings in each array is determined based on the capacity, the supports concentrated in a factory are formed into an array unit, the existing array division scheme is designed completely by manpower, and the cable cost control of the whole array is completely dependent on the experience of the designer.
Disclosure of Invention
The invention solves the problem that the existing array dividing scheme is designed completely by manpower, and the cable cost control of the whole array is completely dependent on the experience of designers.
In order to solve the above problems, the present invention provides an automatic arrangement method of a photovoltaic array, including:
Acquiring array information parameters, wherein the array information parameters comprise array capacity, and the length, width and spacing of a group string;
Generating unit modules, wherein the length of the unit modules is determined based on the length and the spacing of the group strings, the width of the unit modules is determined based on the width and the spacing of the group strings, and the number of the unit modules is determined based on the array capacity;
Generating a first array of first preset shapes based on the unit modules;
Performing preset bus zone dividing operation on the first array to obtain a first array with divided bus zones;
generating photovoltaic device arrangement information based on the first array of divided bus areas, wherein the photovoltaic device comprises a bus box, an inverter and a transformer.
Optionally, after generating the photovoltaic device arrangement information based on the first array of divided bus areas, the method further includes:
acquiring cable costs corresponding to a plurality of arrays of different preset shapes generated based on the unit modules, wherein the first preset shape is one of the plurality of different preset shapes;
and determining the array with the lowest cable cost in the arrays with the different preset shapes.
Optionally, the plurality of different preset shapes are regular polygons or circles.
Optionally, the pitch of the group strings includes an east-west pitch and a north-south pitch, the length of the unit modules is the sum of the length of the group strings and the east-west pitch, the width of the unit modules is the sum of the width of the group strings and the north-south pitch, and the number of the unit modules is equal to the number of the group strings.
Optionally, the generating the first array of the first preset shape based on the unit module includes:
Subdividing the unit module into discrete units, wherein the range of the step length of the discrete units is as follows: k is { x, x/2, x/3, x/4..x/n }, n is a positive integer, x/n < 1 < x/(n-1), K is the step size of the discrete unit, and x is the length of the unit module;
determining the number of discrete units based on the number of unit modules and the step size of the discrete units;
And arranging the determined number of discrete units according to the first preset shape to obtain the first array.
Optionally, the performing a preset bus area dividing operation on the first array, to obtain the first array with the well-divided bus areas includes:
Obtaining a current batch of brackets, wherein the current batch of brackets are the new brackets remained in the previous batch and the new brackets with preset row numbers, and the new brackets are defined as brackets of undetermined divided areas;
Acquiring the branch number of the combiner box and the total first branch number of the current batch of brackets, and judging whether the first branch number can be divided by the branch number of the combiner box;
If yes, taking the current batch of brackets as a dividing area, and dividing the dividing area into one or more confluence areas;
If not, removing the brackets corresponding to the first number of branches of the last row of the current batch of brackets, taking the rest brackets of the current batch of brackets as a dividing area, or selecting a new bracket corresponding to the second number of branches from the adjacent row of the current batch of brackets, merging the new brackets into the current batch of brackets, taking the new bracket as a dividing area, dividing the dividing area into one or more confluence areas, wherein the difference value between the first number of branches and the first number of branches, or the sum of the first number of branches and the second number of branches can be divided by the confluence box branch number; and the brackets corresponding to the first number of branches of the last row of the brackets in the current batch or the brackets in the adjacent row of the brackets in the current batch except the brackets incorporated into the brackets in the current batch are the rest new brackets in the current batch.
Optionally, the preset number of rows has a plurality of selectable values, and the performing a preset bus zone dividing operation on the first array to obtain a first array with divided bus zones includes:
Taking each selectable value as the preset row number, executing the step of obtaining the current batch of brackets, and obtaining a bus zone division result corresponding to each selectable value;
calculating the cable cost of the bus zone division result corresponding to each selectable value;
And determining an array corresponding to the bus zone division result with the lowest cable cost as the first array.
Optionally, the acquiring the cable cost corresponding to each of the plurality of arrays of different preset shapes generated based on the unit modules includes:
The cable cost for each array of different preset shapes is calculated as follows:
The first array is provided with m bus areas, each bus area corresponds to n groups of strings, d i is the length of a low-voltage cable of an i-th bus box connected with an inverter, p i is the price corresponding to the unit length of the low-voltage cable of the i-th bus box connected with the inverter, d j is the first cable length of the j-th group string connected with the i-th bus box, and p j is the price corresponding to the unit length of the first cable, wherein the first cable is a cable connected between the groups of strings and the bus box;
Wherein, (x i,yi) is the coordinate of the ith combiner box, (x, y) is the inverter coordinate, h i is the combiner box terminal ground clearance, h q is the inverter terminal ground clearance, L 1 is the cable length margin value of the combiner box to the inverter, (x j,yj) is the center coordinate of the jth string, h j is the string outlet ground clearance, h p is the first cable ground clearance, and L 2 is the cable length margin value of the string-connected combiner box.
Optionally, the generating photovoltaic device arrangement information based on the first array of divided bus areas comprises:
calculating the pressure drop percentage of a second cable, wherein the second cable is connected between the group string and the combiner box;
Calculating the corrected low-voltage cable current, and selecting a third cable with larger current-carrying capacity than the low-voltage cable current and minimum wire diameter from a preset cable library;
Calculating a percentage of voltage drop between the combiner box and the inverter based on the third cable;
if the sum of the pressure drop percentage of the second cable and the pressure drop percentage between the combiner box and the inverter is smaller than a preset cable loss value, the third cable is used as a cable connected between the combiner box and the inverter;
And if the sum of the pressure drop percentage of the second cable and the pressure drop percentage between the combiner box and the inverter is larger than a preset cable loss value, selecting a cable with a larger wire diameter than the third cable from the preset cable library as a new third cable, and repeatedly executing the calculation of the pressure drop percentage between the combiner box and the inverter based on the third cable until the sum of the pressure drop percentage of the second cable and the pressure drop percentage between the combiner box and the inverter is smaller than the preset cable loss value.
The invention also provides an automatic arrangement method of the photovoltaic power station, which comprises the following steps:
Acquiring a power station coordinate range of the photovoltaic power station;
generating a photovoltaic array of the photovoltaic power plant based on the photovoltaic array automatic arrangement method of any one of the above;
respectively obtaining array shapes with the lowest cost of each photovoltaic array cable in the photovoltaic power station;
And combining each photovoltaic array in the photovoltaic power station in the coordinate range of the power station in an array shape with the lowest cable cost.
The invention also provides an automatic arrangement device of the photovoltaic array, which comprises:
The device comprises an acquisition unit, a storage unit and a storage unit, wherein the acquisition unit is used for acquiring array information parameters, wherein the array information parameters comprise array capacity, and the length, width and interval of a group string;
a unit module generating unit for generating unit modules, wherein the length of the unit modules is determined based on the length and the pitch of the group strings, the width of the unit modules is determined based on the width and the pitch of the group strings, and the number of the unit modules is determined based on the array capacity;
An array generating unit for generating a first array of a first preset shape based on the unit modules;
the bus dividing unit is used for executing preset bus region dividing operation on the first array to obtain a first array with divided bus regions;
and a device arrangement unit for generating photovoltaic device arrangement information based on the first array of divided bus areas, wherein the photovoltaic device comprises a bus box, an inverter and a transformer.
The invention also provides an automatic arrangement device of the photovoltaic power station, which comprises:
the acquisition unit is used for acquiring a power station coordinate range of the photovoltaic power station;
a photovoltaic array automatic arrangement device for generating a photovoltaic array of the photovoltaic power station based on the photovoltaic array automatic arrangement method as set forth in any one of the above;
the acquisition unit is further used for respectively acquiring the array shape with the lowest cost of each photovoltaic array cable in the photovoltaic power station;
and the combining unit is used for combining each photovoltaic array in the photovoltaic power station in the coordinate range of the power station in an array shape with the lowest cable cost.
The invention also proposes a computer device comprising a computer readable storage medium storing a computer program and a processor, which computer program, when read and run by the processor, implements the automatic arrangement method of a photovoltaic array as defined in any one of the above, or implements the automatic arrangement method of a photovoltaic power plant as defined above.
Through generating the unit module based on group string length, width and interval, based on the unit module generation first array, the calculated amount when generating the first array can be reduced, then the confluence area is automatically divided in the first array, the position information of the photovoltaic equipment is generated, the automatic arrangement of the photovoltaic array is completed, the controllability of the cable cost can be improved, the cable cost is reduced, and meanwhile, the array design efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of an embodiment of an automatic arrangement method of a photovoltaic array according to the present invention;
FIG. 2 is a schematic view of a regular hexagonal array according to an embodiment of the present invention;
FIG. 3 is a schematic view of a regular quadrilateral array according to an embodiment of the present invention;
FIG. 4 is a schematic view of a regular tetragonal array with a rotation angle of 45 degrees according to an embodiment of the present invention;
FIG. 5 is a schematic illustration of a regular trilateral array shape according to an embodiment of the present invention;
FIG. 6 is a diagram illustrating a method for classifying a bus region according to an embodiment of the present invention
FIG. 7 is a schematic view of an embodiment of the photovoltaic array automatic placement device of the present invention;
FIG. 8 is a schematic diagram of a computer device according to an embodiment of the invention.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
The invention provides an automatic arrangement method of a photovoltaic array.
Referring to fig. 1, in an embodiment of the automatic photovoltaic array arrangement method of the present invention, the automatic photovoltaic array arrangement method includes:
Step S10, acquiring array information parameters, wherein the array information parameters comprise array capacity, length, width and interval of a group string;
The array information parameters refer to parameters which are required to be acquired for carrying out automatic arrangement of the photovoltaic array when the corresponding program of the automatic arrangement method of the photovoltaic array is executed, and comprise array capacity, length, width and spacing of strings, wherein the spacing of the strings comprises east-west spacing of the strings and north-south spacing of the strings, the string length refers to the length of one string in the east-west direction, and the string width refers to the width of one string in the north-south direction. The east-west spacing of strings refers to the east-west logical spacing between two strings, in one embodiment, one string is arranged on one bracket, and the east-west spacing of strings is equal to the actual spacing of two brackets; in another embodiment, two strings are arranged side by side in the east-west direction on one bracket, and the east-west distance between strings is equal to 1/2 of the actual distance between the two brackets in the east-west direction. The north-south spacing of the strings refers to the spacing in the north-south direction between two strings, which is equal to the spacing between the front and rear brackets in the north-south direction.
The array information parameters can be stored in a preset database, can be directly obtained from the preset database when the array information parameters are needed to be used, can also comprise the number of group strings or array capacity, can calculate the number of group strings based on the array capacity, can generate the number of group strings by dividing the capacity of a single group string by the capacity of each group string, and can be used for generating the number of group strings.
Step S20, generating unit modules, wherein the length of the unit modules is determined based on the length and the spacing of the group strings, the width of the unit modules is determined based on the width and the spacing of the group strings, and the number of the unit modules is determined based on the array capacity;
In order to reduce the calculation difficulty of generating the first array, basic units used for array arrangement, namely unit modules, are generated based on the string length, string width, string east-west spacing and string north-south spacing, the strings and the spacing between the strings are integrated into the unit modules, the data volume is reduced, and then the calculation difficulty and the array arrangement speed are reduced.
Optionally, the length of the unit modules is equal to the sum of the string length and the string east-west spacing, the width of the unit modules is equal to the sum of the string width and the string north-south spacing, the number of the unit modules is equal to the number of the strings, and the number of the unit modules can be indirectly determined based on the number of the strings determined by the array capacity. The east-west spacing of the strings refers to the east-west spacing of every two strings, and the north-south spacing of the strings refers to the north-south spacing of every two strings. One group string corresponds to one unit module, so that the unit modules can be based on actual group string data, the array arranged based on the unit modules accords with the actual arrangement condition, and the effective power station arrangement design is assisted.
Optionally, the length of the unit module is equal to the sum of the lengths of the plurality of group strings and the pitches of the plurality of group strings, and the width of the unit module is equal to the sum of the widths of the plurality of group strings and the widths of the plurality of group strings. Optionally, the length of the unit module is equal to F times of the sum of the group string and the group string east-west pitch, and the width of the unit module is equal to G times of the sum of the group string width and the group string north-south pitch, wherein 0< F <1,0< G <1.
Step S30, generating a first array of a first preset shape based on the unit modules;
The first array here is a photovoltaic array, which refers to the basic unit of power generation in a photovoltaic power plant, typically equipped with a transformer.
The first preset shape may be a preset shape, and may be a regular triangle (as shown in fig. 5), a regular quadrangle (as shown in fig. 3 or 5), a regular pentagon, a regular hexagon (as shown in fig. 2), a regular heptagon, a regular octagon, or a regular polygon. Because the distances from the vertexes of the regular polygons to the center point are equal, the photovoltaic array is set to be the regular polygon, and the inverter is arranged near the center of the photovoltaic array, the distances from the combiner boxes near each vertex to the inverter are also approximately equal, the cable lengths are also approximately equal, the cable losses are further approximately equal, the characteristics of equal cable losses are maintained, the electric energy loss can be reduced, the final available electric quantity is improved, the distances from the round edges to the center point are equal, the photovoltaic array is set to be round, the distances from the combiner boxes at the edges to the inverter are approximately equal, the cable lengths are approximately equal, and the cable losses are approximately equal.
The regular polygon may be any regular polygon with a rotation angle, such as a regular polygon with a rotation angle of 0 ° in fig. 3, and a regular polygon with a rotation angle of 45 ° in fig. 4.
Before arranging the photovoltaic arrays according to a first preset shape, firstly acquiring an arrangeable support range, wherein the arrangeable support range is a predetermined range capable of arranging the photovoltaic arrays, and the arrangeable support range can be manually input or acquired by reading related configuration files, wherein the arrangeable support range can be represented by a coordinate form, and the coordinates can be actual geographic coordinates or coordinates which are automatically established based on the land condition of the actual arrangeable support. Specifically, a unit module based on the strings can be determined according to the string length, the string width, the string east-west spacing and the string north-south spacing, and the unit modules are arranged according to a first preset shape within the range of the arrangeable bracket. By setting the unit module, the calculation parameters can be simplified, the calculation difficulty and the calculation cost can be reduced, and the array arrangement speed can be improved.
In an alternative embodiment, step S30 includes: subdividing the unit module into discrete units, wherein the range of the step length of the discrete units is as follows: k is { x, x/2, x/3, x/4..x/n }, n is a positive integer, x/n < 1 < x/(n-1), K is the step size of the discrete unit, and x is the length of the unit module; determining the number of discrete units based on the number of unit modules and the step size of the discrete units; and arranging the determined number of discrete units according to the first preset shape to obtain the first array.
The unit modules are further subdivided into discrete units, and the unit modules are distributed in a power station plant area according to a finite element method, so that the finally arranged first array has smoother edges, the edge support of the first array is controlled within a boundary range, and the cable length of the first array is smaller.
In one embodiment, a similarity threshold is preset, a possible step length range of the discrete units is traversed, similarity calculation is performed on each step length by combining the discrete units into a regular polygon and a standard regular polygon, when the graph similarity of the regular polygon and the standard regular polygon is larger than or equal to the similarity threshold, the corresponding discrete unit step length meets the smoothness requirement, a value smaller than the step length in the discrete unit step length or the step length range can be used as a final step length, the higher the smoothness is, the lower the cost is, the larger the calculated amount is, the longer the calculated time is, and therefore the final step length value can be determined based on the calculation capability of a processor. For example, the possible value range of K is 10,9,8,7,6,5,4,3,2,1, k=10 is first taken, it is determined whether the similarity is greater than or equal to the similarity threshold, if the similarity is smaller than the similarity threshold, then the next value is continuously taken until the similarity is greater than or equal to the similarity threshold, if the similarity is greater than or equal to the similarity threshold when k=5, then k=5, 4,3,2,1 all satisfy the smoothness requirement, and any one of them is selected.
Step S40, a preset bus area dividing operation is carried out on the first array, and a first array with divided bus areas is obtained;
the first array is an array for group string/rack position determination, and bus zone division can be performed based on the first array.
Based on a preset bus zone division operation, automatically performing bus zone division on the first array, and in an alternative embodiment, the preset bus zone division operation includes: determining the number of corresponding supports when the bus box is fully connected based on the number of branches corresponding to the bus box and the number of branches corresponding to the single support, for example, the number of branches corresponding to the bus box is 16, the number of corresponding supports when the bus box is fully connected is 8, then forming one or more sliding windows based on the number of corresponding supports when the bus box is fully connected, sliding on the first array, each sliding including a non-partitioned support in the window, taking the plurality of supports in the window as a bus zone, wherein the sliding window is a 2 x 4 window, and 3×3 windows, when the greatest common divisor of the corresponding support number when the bus box is fully connected does not contain 1, the greatest common divisor of the corresponding support number when the bus box is fully connected can be taken as the size of the sliding window, or a preset window with the size similar to the greatest common divisor of the corresponding support number when the bus box is fully connected is taken, for example, the greatest common divisor of the corresponding support number when the bus box is fully connected is 2 and 4, the preset window database has 3×3 windows and 4×4 windows, and then the 3×3 windows are selected as the sliding windows.
And step S50, generating photovoltaic equipment arrangement information based on the first array of the divided bus areas, wherein the photovoltaic equipment comprises a bus box, an inverter and a transformer.
After the first array and the confluence area division result are determined, the central coordinates of the strings are determined, the positions of the supports are determined, and the confluence boxes are arranged on the pile foundations, and the pile foundations are fixed at the positions of the supports, so that the coordinates of all pile foundation points can be determined, for each confluence area, all pile foundation point coordinates of the confluence area can be traversed, and the pile foundation point closest to the total distance between all strings of the confluence area is obtained and used as the arrangement position of the confluence boxes. After the positions of all the junction boxes are determined, the positions of the inverter and the transformer can be determined, the inverter and the transformer are arranged at the approximate geometric center position of the first array, and the inverter and the transformer are arranged at the approximate geometric center position of the first array because the first array is round or regular polygon, so that the total cable length tends to be minimum.
After the array shape is determined, the distribution positions of photovoltaic equipment such as a bus area, a bus box, an inverter, a transformer and the like are determined, the cable routing connection method is basically determined, and the photovoltaic array is basically completed.
Different photovoltaic array arrangement schemes may need different cable lengths, have great influence on the cost of the whole system, and the photovoltaic array arrangement schemes in the prior art are all completely dependent on experience of designers, have low control degree on the cost and have great possibility of wasting electric energy no matter whether the photovoltaic array arrangement schemes are in a shape, a confluence area or a photovoltaic equipment arrangement position. According to the embodiment of the invention, the first array is generated based on the unit modules based on the group string length, the group string width and the group string interval, so that the calculated amount when the first array is generated can be reduced, then the confluence area is automatically divided in the first array, the position information of the photovoltaic equipment is generated, the automatic arrangement of the photovoltaic array is completed, the controllability of the cable cost can be improved, the cable cost is reduced, and the array design efficiency is improved.
Optionally, after step S50, the method further includes:
Step S60, obtaining cable costs corresponding to each of a plurality of arrays of different preset shapes generated based on the unit modules, wherein the first preset shape is one of the plurality of different preset shapes;
A plurality of arrays of preset shapes are sequentially generated based on the unit modules. Optionally, the plurality of preset shapes belong to regular polygons or circles, the plurality of preset shapes comprise regular triangles, squares, regular pentagons and regular hexagons, the regular heptagons and the regular octagons are up to circles, and the arrays can be sequentially generated according to the regular triangles, the squares, the regular pentagons and the regular hexagons and the regular octagons up to circles, so that the arrays with different shapes are obtained.
After the shape of the photovoltaic array is determined, the bus area dividing mode and the photovoltaic equipment position corresponding to each preset shape can be determined, and then the cable cost of the array corresponding to each preset shape can be calculated.
Specifically, when calculating the cable cost, the first cable buried depth (the first cable refers to the cable connected between the combiner box and the group string), the cable buried depth, the combiner box terminal ground clearance height, the inverter terminal ground clearance height, the cable length margin value of the combiner box connected with the inverter, the group string outlet ground clearance height, the cable length margin value of the group series combiner box, and the like are also required to be obtained, each array is provided with m combiner areas, each combiner area corresponds to n group strings, and then the cable cost calculation formula is:
Wherein d i is the length of the i-th bus box connected to the inverter, p i is the price corresponding to the unit length of the i-th bus box connected to the inverter, d j is the first cable length of the j-th group connected to the i-th bus box in series, and p j is the price corresponding to the unit length of the first cable;
Wherein, (x i,yi) is the coordinates of the ith combiner box, (x, y) is the inverter coordinates, h i is the combiner box terminal ground clearance, h q is the inverter terminal ground clearance, L 1 is the cable length margin value of the combiner box to the inverter, (x j,yj) is the center coordinates of the jth string, h j is the string outlet ground clearance, h p is the first cable ground clearance, and L 2 is the cable length margin value of the string-connected combiner box.
Step S70, determining an array with the lowest cable cost among the plurality of arrays with different preset shapes.
By comparing the cable costs of the arrays of different shapes, the array division mode/array division shape with the lowest cable cost can be obtained, and the shape is output.
The intelligent and effectiveness of the corresponding software of the invention are improved by acquiring the cable costs corresponding to the arrays with different preset shapes generated based on the unit modules and selecting the array division shape with the lowest cable cost, so that effective guidance is provided for the actual arrangement of the photovoltaic power station.
Optionally, step S40 includes:
Step S41, obtaining a current batch of brackets, wherein the current batch of brackets are the new brackets remained in the previous batch and the new brackets with preset rows, and the new brackets are defined as brackets of undetermined divided areas;
when the bus region dividing operation is performed, the whole photovoltaic array is first divided into a plurality of divided regions, and then each divided region is divided into one or more bus regions with each divided region as a bus region dividing unit.
As shown in fig. 2 to 5, the first array is composed of parallel rows of brackets, and a correspondence relationship between the rows and the number of branches can be established, that is, how many branches a certain row of brackets in the first array corresponds to in total, and because of the limitation of the shape of the first array, the number of branches corresponding to any two rows of brackets in the first array may be equal or unequal, two-dimensional data [ row, column ] of the rows and the number of branches can be established, wherein row is the row number, column is the number of branches of the row, and the number of branches of the brackets can be determined by obtaining the number of rows of brackets.
The new rack of the preset row number is the next row of racks of the racks related to the previous batch is the initial row, wherein, as long as the row of racks and the previous batch are a divided area, the rack related to the previous batch is the rack related to the previous batch, and the rest racks of the previous batch refer to the new rack in the racks related to the previous batch. When the current lot of stents is the first lot of stents, the new stents remaining from the previous lot are 0.
The preset number of rows may be obtained from north to south or from south to north. The preset number of rows can be selected to be in the range of {2,3,4,5,6}.
After the current batch of brackets is determined, the branch number statistics is carried out on the batch to obtain the total branch number, namely the first branch number.
Step S42, obtaining the branch number of the combiner box and the total first branch number of the current batch of brackets, and judging whether the first branch number can be divided by the branch number of the combiner box;
The branch number of the combiner box is 16, 24, 32, 40 and the like. When the first branch number can be divided by the branch number of the bus box, the current batch of brackets can be divided into an integer number of bus areas under the condition that the bus box is fully connected, and when the first branch number can not be divided by the branch number of the bus box, the current batch of brackets can not be divided into the integer number of bus areas under the condition that the bus box is fully connected.
Step S43, if yes, taking the current batch of brackets as a dividing area, and dividing the dividing area into one or more confluence areas;
If the first branch number can be divided by the branch number of the combiner box, the current batch of brackets is used as a dividing area. When the bus area is divided by one division area, the circulation can be sequentially performed from top to bottom, from left to right, and from top to bottom, until the number of supports for fully connecting one bus box is determined, for example, as shown in fig. 6, which is a part of the supports in an array, the bus area is divided according to the arrow direction in the figure, the number of branches of the bus box is 16, the number of branches corresponding to one support is 2, the supports 1, 2, 3, 4, 5, 6, 7, 8 are one bus area, and the supports 9, 10, 11, 12, 13, 14, 15, 16 are one bus area.
Step S44, if not, removing the brackets corresponding to the first number of branches of the last row of the current batch of brackets, taking the rest brackets of the current batch of brackets as a dividing area, or selecting a new bracket corresponding to the second number of branches from the adjacent row of the current batch of brackets, merging the new bracket into the current batch of brackets, taking the new bracket as a dividing area, dividing the dividing area into one or more confluence areas, wherein the difference value between the first number of branches and the first number of branches, or the sum of the first number of branches and the second number of branches can be divided by the confluence box branch number; and the brackets corresponding to the first number of branches of the last row of the brackets in the current batch or the brackets in the adjacent row of the brackets in the current batch except the brackets incorporated into the brackets in the current batch are the rest new brackets in the current batch.
If the first branch number cannot be divided by the branch number of the combiner box, removing the supports corresponding to the first number of branches from the current batch of supports, and dividing the branch number remained after the first number of branches are removed from the current batch of supports by the branch number of the combiner box; or the second number of branches can be taken to be integrated into the current batch of supports, and the number of branches after the current batch of supports are integrated into the second number of branches can be divided by the number of branches of the combiner box. The step of performing the bus zone division on one divided area is as described above, and is not described here.
After determining the dividing area of the current lot of brackets, updating the current lot, and returning to the step of executing the step S41 to obtain the brackets in the current lot until the dividing of all brackets of the first array is completed.
In one embodiment, in the case where the first branch number is not divided by the total trunk branch number, the total division is performed based on the following steps:
the branch number corresponding to the preset row number bracket is represented as Q_m, and the branch number Q_m+V_ (m-1) and the conflux box branch number T corresponding to the mth batch are based on the following formula:
Q_m+V_(m-1)＝q*T+V_m，
Where q is a multiple, q is an integer, v_m is the remainder (v_m noteq0 when the first branch number cannot be divided by the manifold branch number), v_ (m-1) is the new rack remaining in the previous batch;
V_m+.0), then:
If (v_m)/T > =0.5, taking an adjacent row of brackets under the brackets in the current batch, and calculating the branch number q_k corresponding to the row of brackets; if q_k > = (T-v_m), taking the brackets corresponding to the T-v_m branches at the middle position in the row (left or right if the middle position can be taken left or right) and taking the bracket as a dividing area in the current batch; if Q_k < (T-V_m), then downwards taking a row of adjacent brackets and calculating the branch number Q_h corresponding to the row of brackets, if Q_h > = (T-V_m) -Q_k, taking the brackets corresponding to the (T-V_m) -Q_k branches to the current batch as a dividing area in the middle position of the row (if the middle position can be taken leftwards or rightwards), and continuing iterating according to the same rule until the branch number corresponding to the row of brackets is found to meet the condition, and jumping out the cycle;
If (V_m)/T is less than 0.5, removing the number of the supports corresponding to the V_m branches at the last row of middle positions (left or right when the middle positions can be left or right), and taking the current batch with the supports corresponding to the V_m branches removed as a dividing area.
After the division of the dividing area of the current batch of brackets is completed, taking the next row of the last row of the current batch of brackets as an initial row, taking the brackets with the preset row number as the current batch of brackets again, and repeating the steps.
And judging whether the first branch number can be divided by the branch number of the bus box by combining the first branch number corresponding to the current batch of brackets with the branch number of the bus box, if so, directly taking the current batch of brackets as a dividing area, and if not, removing part of brackets or merging part of brackets to divide the current batch of brackets into an integral number of bus areas, reasonably planning the bus areas, fully utilizing bus box resources, and improving the utilization rate of the photovoltaic equipment.
Optionally, the preset number of rows has a plurality of optional values, and step S40 includes:
Taking each selectable value as the preset row number, executing the step of obtaining the current batch of brackets, and obtaining a bus zone division result corresponding to each selectable value; calculating the cable cost of the bus zone division result corresponding to each selectable value; and determining an array corresponding to the bus zone division result with the lowest cable cost as the first array.
In one embodiment, the preset number of rows has a range of {2,3,4,5,6}, the 5 values are traversed, steps S41-S44 are executed respectively, and the bus zone division of the first array is completed, so as to obtain a bus zone division result corresponding to each selectable value.
The plurality of bus-section dividing results obtained based on the selectable values are different in cable cost, and after the bus-section dividing, the bus-section position and the inverter/transformer position with the lowest cable cost can be directly determined, and then the cable cost is calculated, so that the bus-section dividing results corresponding to the selectable values are traversed, the bus-section position and the inverter/transformer position with the lowest cable cost corresponding to the bus-section dividing results are respectively calculated, the cable cost corresponding to the bus-section dividing results is calculated based on the calculated bus-section position and the inverter/transformer position with the lowest cable cost, and the bus-section dividing result with the lowest cable cost is used as the final bus-section dividing result.
And determining a bus zone division result with the lowest cable cost by traversing a plurality of selectable values of the preset row number, and obtaining a bus zone division mode with the lowest cable cost of the photovoltaic array so as to reduce the overall electricity-measuring cost.
Optionally, after step S50, or the cable cost of the bus zone division result corresponding to each of the selectable values is calculated in step S40, or the step of obtaining the cable cost corresponding to the plurality of preset shape arrays in step S60 includes an automatic cable selection step:
(1) Calculating the pressure drop percentage of a second cable, wherein the second cable is a cable connected between a group string and the combiner box, and the second cable is a square-wire cable, and the specific steps of calculating the pressure drop percentage of the second cable are as follows:
obtaining the number M of components contained in the group string, calculating the open circuit voltage U M of the components, and calculating the direct current voltage of a circuit: u DC＝M×Um;
Obtaining the maximum value d of the distance between the combiner box and the connected strings, the unit length resistance r of the second cable, the corresponding current I mppt of the maximum power point of the assembly, and calculating the maximum voltage drop of the second cable: Δu=2×d×r×i mppt ++1000;
calculating a second cable pressure drop percentage:
(2) Calculating the corrected low-voltage cable current, and selecting a third cable with larger current-carrying capacity than the low-voltage cable current and minimum wire diameter from a preset cable library;
Based on And calculating corrected cable current, wherein N is the number of branches connected with the combiner box, and H is a cable correction coefficient.
(3) Calculating a percentage of voltage drop between the combiner box and the inverter based on the third cable;
The percentage of the voltage drop between the combiner box to the inverter is calculated based on the following formula,
Wherein L is the distance between the combiner box and the connected inverter.
(4) If the sum of the pressure drop percentage of the second cable and the pressure drop percentage between the combiner box and the inverter is smaller than a preset cable loss value, the third cable is used as a cable connected between the combiner box and the inverter;
(5) And if the sum of the pressure drop percentage of the second cable and the pressure drop percentage between the combiner box and the inverter is larger than a preset cable loss value, selecting a cable with a larger wire diameter than the third cable from the preset cable library as a new third cable, and repeatedly executing the calculation of the pressure drop percentage between the combiner box and the inverter based on the third cable until the sum of the pressure drop percentage of the second cable and the pressure drop percentage between the combiner box and the inverter is smaller than the preset cable loss value.
If the cable can not be selected in the cable library, prompting the user that the cable meeting the cable loss percentage is not selected.
Through the automatic type step of cable selection, can carry out the selection of the cross-sectional area of the cable between collection flow box and the dc-to-ac converter in the array voluntarily, under the prerequisite that guarantees that the cable loss satisfies the requirement, select minimum cross-sectional area cable as far as possible to reduce whole cable cost, reduce the design cost.
The invention also provides an automatic arrangement method of the photovoltaic power station, which comprises the following steps:
Acquiring a power station coordinate range of the photovoltaic power station;
generating a photovoltaic array of the photovoltaic power plant based on the photovoltaic array automatic arrangement method of any one of the above;
the coordinate range of the power station is a predetermined coordinate range, and the photovoltaic array of the photovoltaic power station refers to a photovoltaic array arranged in the range of the photovoltaic power station.
Respectively obtaining array shapes with the lowest cost of each photovoltaic array cable in the photovoltaic power station; the array shape with the lowest cost of each photovoltaic array cable can be obtained through pre-calculation and stored in association with each photovoltaic array, the photovoltaic power station comprises the serial numbers of each photovoltaic array, and when the array shape with the lowest cost of each photovoltaic array cable is obtained, the array shape can be obtained from a preset database based on the serial numbers of each photovoltaic array.
And combining each photovoltaic array in the photovoltaic power station in the coordinate range of the power station in an array shape with the lowest cable cost.
And combining each photovoltaic array in the power station coordinate range in an array shape with the lowest cable cost, so as to complete automatic arrangement of the photovoltaic power station, and obtain the photovoltaic power station with the lowest cost.
The invention further provides an automatic arrangement device of the photovoltaic array. Referring to fig. 7, in an embodiment of the automatic photovoltaic array arrangement apparatus of the present invention, the automatic photovoltaic array arrangement apparatus includes:
An obtaining unit 101, configured to obtain an array information parameter, where the array information parameter includes an array capacity and a length, a width, and a pitch of a group string;
A unit module generating unit 102 for generating unit modules, wherein the length of the unit modules is determined based on the length and the pitch of the group strings, the width of the unit modules is determined based on the width and the pitch of the group strings, and the number of the unit modules is determined based on the array capacity;
An array generation unit 103 for generating a first array of a first preset shape based on the unit modules;
A bus dividing unit 104, configured to perform a preset bus region dividing operation on the first array, to obtain a first array with divided bus regions;
And a device arrangement unit 105 for generating photovoltaic device arrangement information based on the first array of divided bus areas, wherein the photovoltaic device comprises a bus box, an inverter and a transformer.
Optionally, the photovoltaic array automatic arrangement device further comprises:
a cost acquisition unit configured to acquire cable costs corresponding to each of a plurality of arrays of different preset shapes generated based on the unit modules, wherein the first preset shape is one of the plurality of different preset shapes; and determining the array with the lowest cable cost in the arrays with the different preset shapes.
Optionally, the plurality of different preset shapes are regular polygons or circles.
Optionally, the pitch of the group strings includes an east-west pitch and a north-south pitch, the length of the unit modules is the sum of the length of the group strings and the east-west pitch, the width of the unit modules is the sum of the width of the group strings and the north-south pitch, and the number of the unit modules is equal to the number of the group strings.
Optionally, the array generating unit 103 is further configured to subdivide the unit module into discrete units, where a range of values of step sizes of the discrete units is: k is { x, x/2, x/3, x/4..x/n }, n is a positive integer, x/n < 1 < x/(n-1), K is the step size of the discrete unit, and x is the length of the unit module; determining the number of discrete units based on the number of unit modules and the step size of the discrete units; and arranging the determined number of discrete units according to the first preset shape to obtain the first array.
Optionally, the confluence dividing unit 104 is further configured to obtain a current batch of brackets, where the current batch of brackets are a new bracket remaining in a previous batch and a new bracket with a preset number of rows, and the new bracket is defined as a bracket of an undetermined division area; acquiring the branch number of the combiner box and the total first branch number of the current batch of brackets, and judging whether the first branch number can be divided by the branch number of the combiner box; if yes, taking the current batch of brackets as a dividing area, and dividing the dividing area into one or more confluence areas; if not, removing the brackets corresponding to the first number of branches of the last row of the current batch of brackets, taking the rest brackets of the current batch of brackets as a dividing area, or selecting a new bracket corresponding to the second number of branches from the adjacent row of the current batch of brackets, merging the new brackets into the current batch of brackets, taking the new bracket as a dividing area, dividing the dividing area into one or more confluence areas, wherein the difference value between the first number of branches and the first number of branches, or the sum of the first number of branches and the second number of branches can be divided by the confluence box branch number; and the brackets corresponding to the first number of branches of the last row of the brackets in the current batch or the brackets in the adjacent row of the brackets in the current batch except the brackets incorporated into the brackets in the current batch are the rest new brackets in the current batch.
Optionally, the preset number of rows has a plurality of optional values, and the busbar dividing unit 104 is further configured to execute the step of obtaining the current lot of brackets with each of the optional values as the preset number of rows, to obtain a busbar dividing result corresponding to each of the optional values; calculating the cable cost of the bus zone division result corresponding to each selectable value; and determining an array corresponding to the bus zone division result with the lowest cable cost as the first array.
Optionally, the cost obtaining unit is configured to calculate the cable cost of each array of different preset shapes according to the following formula:
The first array is provided with m bus areas, each bus area corresponds to n groups of strings, d i is the length of a low-voltage cable of an i-th bus box connected with an inverter, p i is the price corresponding to the unit length of the low-voltage cable of the i-th bus box connected with the inverter, d j is the first cable length of the j-th group string connected with the i-th bus box, and p j is the price corresponding to the unit length of the first cable, wherein the first cable is a cable connected between the groups of strings and the bus box;
Wherein, (x i,yi) is the coordinate of the ith combiner box, (x, y) is the inverter coordinate, h i is the combiner box terminal ground clearance, h q is the inverter terminal ground clearance, L 1 is the cable length margin value of the combiner box to the inverter, (x j,yj) is the center coordinate of the jth string, h j is the string outlet ground clearance, h p is the first cable ground clearance, and L 2 is the cable length margin value of the string-connected combiner box.
Optionally, the device arrangement unit 105 is further configured to calculate a pressure drop percentage of a second cable, wherein the second cable is a cable connected between the group string and the junction box;
Calculating the corrected low-voltage cable current, and selecting a third cable with larger current-carrying capacity than the low-voltage cable current and minimum wire diameter from a preset cable library;
Calculating a percentage of voltage drop between the combiner box and the inverter based on the third cable;
if the sum of the pressure drop percentage of the second cable and the pressure drop percentage between the combiner box and the inverter is smaller than a preset cable loss value, the third cable is used as a cable connected between the combiner box and the inverter;
And if the sum of the pressure drop percentage of the second cable and the pressure drop percentage between the combiner box and the inverter is larger than a preset cable loss value, selecting a cable with a larger wire diameter than the third cable from the preset cable library as a new third cable, and repeatedly executing the calculation of the pressure drop percentage between the combiner box and the inverter based on the third cable until the sum of the pressure drop percentage of the second cable and the pressure drop percentage between the combiner box and the inverter is smaller than the preset cable loss value.
The explanation of the photovoltaic array automatic arrangement device of the present invention is as described above, and is not repeated here.
The invention further provides an automatic arrangement device of the photovoltaic power station. In an embodiment of the automatic photovoltaic power plant arrangement apparatus of the present invention, the automatic photovoltaic power plant arrangement apparatus includes:
the acquisition unit is used for acquiring a power station coordinate range of the photovoltaic power station;
a photovoltaic array automatic arrangement device for generating a photovoltaic array of the photovoltaic power station based on the photovoltaic array automatic arrangement method as set forth in any one of the above;
the acquisition unit is further used for respectively acquiring the array shape with the lowest cost of each photovoltaic array cable in the photovoltaic power station;
and the combining unit is used for combining each photovoltaic array in the photovoltaic power station in the coordinate range of the power station in an array shape with the lowest cable cost.
The explanation of the automatic arrangement device of the photovoltaic power station is shown above and is not repeated here.
The invention also provides computer equipment. In an embodiment of the computer device according to the present invention, as shown in fig. 8, the computer device includes a computer readable storage medium 201 and a processor 202, where a computer program is stored, and when the computer program is read and executed by the processor 202, the method for automatically arranging a photovoltaic array or the method for automatically arranging a photovoltaic power station according to any embodiment/implementation is implemented, and the description thereof is shown above and not repeated herein.
Although the present disclosure is described above, the scope of protection of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the invention.
Claims (12)
1. A method for automatically arranging a photovoltaic array, comprising:
Acquiring array information parameters, wherein the array information parameters comprise array capacity, and the length, width and spacing of a group string;
Generating unit modules, wherein the length of the unit modules is determined based on the length and the spacing of the group strings, the width of the unit modules is determined based on the width and the spacing of the group strings, and the number of the unit modules is determined based on the array capacity;
Generating a first array of first preset shapes based on the unit modules;
performing preset bus zone dividing operation on the first array to obtain a first array with divided bus zones; the first array is a basic unit for generating electricity in a photovoltaic power station, and one first array is provided with a transformer;
Generating photovoltaic device arrangement information based on the first array of divided bus areas, wherein the photovoltaic devices comprise a bus box, an inverter and a transformer;
Wherein the generating a first array of first preset shapes based on the unit modules comprises:
Subdividing the unit module into discrete units, wherein the range of the step length of the discrete units is as follows: k is { x, x/2, x/3, x/4..x/n }, n is a positive integer, and x/n < 1<x/(n-1), K is the step size of the discrete unit, and x is the length of the unit module;
determining the number of discrete units based on the number of unit modules and the step size of the discrete units;
And arranging the determined number of discrete units according to the first preset shape to obtain the first array.
2. The method of automatic arrangement of a photovoltaic array according to claim 1, further comprising, after generating photovoltaic device arrangement information based on the first array of divided bus areas:
acquiring cable costs corresponding to a plurality of arrays of different preset shapes generated based on the unit modules, wherein the first preset shape is one of the plurality of different preset shapes;
and determining the array with the lowest cable cost in the arrays with the different preset shapes.
3. The method of automatic arrangement of a photovoltaic array according to claim 2, wherein the plurality of different preset shapes are regular polygons or circles.
4. The automatic arrangement method of a photovoltaic array according to any one of claims 1 to 3, wherein the pitch of the group strings includes an east-west pitch and a north-south pitch, the length of the unit modules is a sum of the length of the group strings and the east-west pitch, the width of the unit modules is a sum of the width of the group strings and the north-south pitch, and the number of the unit modules is equal to the number of the group strings.
5. The method of automatic arrangement of a photovoltaic array according to any one of claims 1 to 3, wherein performing a preset bus zone dividing operation on the first array to obtain a first array of divided bus zones comprises:
Obtaining a current batch of brackets, wherein the current batch of brackets are the new brackets remained in the previous batch and the new brackets with preset row numbers, and the new brackets are defined as brackets of undetermined divided areas;
Acquiring the branch number of the combiner box and the total first branch number of the current batch of brackets, and judging whether the first branch number can be divided by the branch number of the combiner box;
If yes, taking the current batch of brackets as a dividing area, and dividing the dividing area into one or more confluence areas;
If not, removing the brackets corresponding to the first number of branches of the last row of the current batch of brackets, taking the rest brackets of the current batch of brackets as a dividing area, or selecting a new bracket corresponding to the second number of branches from the adjacent row of the current batch of brackets, merging the new brackets into the current batch of brackets, taking the new bracket as a dividing area, dividing the dividing area into one or more confluence areas, wherein the difference value between the first number of branches and the first number of branches, or the sum of the first number of branches and the second number of branches can be divided by the confluence box branch number; and the brackets corresponding to the first number of branches of the last row of the brackets in the current batch or the brackets in the adjacent row of the brackets in the current batch except the brackets incorporated into the brackets in the current batch are the rest new brackets in the current batch.
6. The method of claim 5, wherein the predetermined number of rows has a plurality of selectable values, and wherein performing a predetermined bus zone division operation on the first array to obtain a first array of divided bus zones comprises:
Taking each selectable value as the preset row number, executing the step of obtaining the current batch of brackets, and obtaining a bus zone division result corresponding to each selectable value;
calculating the cable cost of the bus zone division result corresponding to each selectable value;
And determining an array corresponding to the bus zone division result with the lowest cable cost as the first array.
7. The automatic arrangement method of a photovoltaic array according to claim 2 or 3, wherein the acquiring cable costs corresponding to each of the plurality of arrays of different preset shapes generated based on the unit modules includes:
The cable cost for each array of different preset shapes is calculated as follows:
The first array is provided with m bus areas, each bus area corresponds to n groups of strings, d i is the length of a low-voltage cable of an i-th bus box connected with an inverter, p i is the price corresponding to the unit length of the low-voltage cable of the i-th bus box connected with the inverter, d j is the first cable length of the j-th group string connected with the i-th bus box, and p j is the price corresponding to the unit length of the first cable, wherein the first cable is a cable connected between the groups of strings and the bus box;
Wherein, (x i,yi) is the coordinate of the ith combiner box, (x, y) is the inverter coordinate, h i is the combiner box terminal ground clearance, h q is the inverter terminal ground clearance, L 1 is the cable length margin value of the combiner box to the inverter, (x j,yj) is the center coordinate of the jth string, h j is the string outlet ground clearance, h p is the first cable ground clearance, and L 2 is the cable length margin value of the string-connected combiner box.
8. A method of automatic arrangement of a photovoltaic array according to any one of claims 1 to 3, wherein the generating photovoltaic device arrangement information based on the first array of divided bus areas comprises, after:
calculating the pressure drop percentage of a second cable, wherein the second cable is connected between the group string and the combiner box;
Calculating the corrected low-voltage cable current, and selecting a third cable with larger current-carrying capacity than the low-voltage cable current and minimum wire diameter from a preset cable library;
Calculating a percentage of voltage drop between the combiner box and the inverter based on the third cable;
if the sum of the pressure drop percentage of the second cable and the pressure drop percentage between the combiner box and the inverter is smaller than a preset cable loss value, the third cable is used as a cable connected between the combiner box and the inverter;
And if the sum of the pressure drop percentage of the second cable and the pressure drop percentage between the combiner box and the inverter is larger than a preset cable loss value, selecting a cable with a larger wire diameter than the third cable from the preset cable library as a new third cable, and repeatedly executing the calculation of the pressure drop percentage between the combiner box and the inverter based on the third cable until the sum of the pressure drop percentage of the second cable and the pressure drop percentage between the combiner box and the inverter is smaller than the preset cable loss value.
9. An automatic arrangement method of a photovoltaic power station, comprising:
Acquiring a power station coordinate range of the photovoltaic power station;
generating a photovoltaic array of the photovoltaic power plant based on the photovoltaic array automatic arrangement method of any one of claims 1 to 8;
respectively obtaining array shapes with the lowest cost of each photovoltaic array cable in the photovoltaic power station;
And combining each photovoltaic array in the photovoltaic power station in the coordinate range of the power station in an array shape with the lowest cable cost.
10. An automatic arrangement device for a photovoltaic array, comprising:
The device comprises an acquisition unit, a storage unit and a storage unit, wherein the acquisition unit is used for acquiring array information parameters, wherein the array information parameters comprise array capacity, and the length, width and interval of a group string;
a unit module generating unit for generating unit modules, wherein the length of the unit modules is determined based on the length and the pitch of the group strings, the width of the unit modules is determined based on the width and the pitch of the group strings, and the number of the unit modules is determined based on the array capacity;
An array generating unit for generating a first array of a first preset shape based on the unit modules;
The bus dividing unit is used for executing preset bus region dividing operation on the first array to obtain a first array with divided bus regions; the first array is a basic unit for generating electricity in a photovoltaic power station, and one first array is provided with a transformer;
an equipment arrangement unit for generating photovoltaic equipment arrangement information based on the first array of divided bus areas, wherein the photovoltaic equipment comprises a bus box, an inverter and a transformer;
The array generation unit is further used for subdividing the unit module into discrete units, wherein the range of the step length of the discrete units is as follows: k is { x, x/2, x/3, x/4..x/n }, n is a positive integer, and x/n < 1<x/(n-1), K is the step size of the discrete unit, and x is the length of the unit module; determining the number of discrete units based on the number of unit modules and the step size of the discrete units; and arranging the determined number of discrete units according to the first preset shape to obtain the first array.
11. An automatic arrangement device for a photovoltaic power station, comprising:
the acquisition unit is used for acquiring a power station coordinate range of the photovoltaic power station;
a photovoltaic array automatic arrangement device for generating a photovoltaic array of the photovoltaic power station based on the photovoltaic array automatic arrangement method according to any one of claims 1 to 8;
the acquisition unit is further used for respectively acquiring the array shape with the lowest cost of each photovoltaic array cable in the photovoltaic power station;
and the combining unit is used for combining each photovoltaic array in the photovoltaic power station in the coordinate range of the power station in an array shape with the lowest cable cost.
12. A computer device comprising a computer readable storage medium storing a computer program and a processor, the computer program, when read and executed by the processor, implementing the photovoltaic array automatic arrangement method of any one of claims 1-8 or the photovoltaic power plant automatic arrangement method of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011116975.2A CN112287529B (en) | 2020-10-19 | 2020-10-19 | Automatic arrangement method for photovoltaic array and automatic arrangement method for photovoltaic power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011116975.2A CN112287529B (en) | 2020-10-19 | 2020-10-19 | Automatic arrangement method for photovoltaic array and automatic arrangement method for photovoltaic power station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112287529A CN112287529A (en) | 2021-01-29 |
| CN112287529B true CN112287529B (en) | 2024-05-14 |
Family
ID=74496380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011116975.2A Active CN112287529B (en) | 2020-10-19 | 2020-10-19 | Automatic arrangement method for photovoltaic array and automatic arrangement method for photovoltaic power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112287529B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112906985A (en) * | 2021-03-25 | 2021-06-04 | 阳光新能源开发有限公司 | Method and device for dividing sub-regions of photovoltaic power station and new energy power generation system |
| CN113221222A (en) * | 2021-05-10 | 2021-08-06 | 中国计量大学上虞高等研究院有限公司 | Method for arranging photovoltaic panels on building roof |
| CN113297712A (en) * | 2021-05-28 | 2021-08-24 | 阳光新能源开发有限公司 | Region division method and device for photovoltaic power station |
| CN113285666B (en) * | 2021-06-08 | 2023-11-07 | 安徽华电工程咨询设计有限公司 | Layout design method for photovoltaic cable trough box |
| CN116707413B (en) * | 2023-08-08 | 2023-11-10 | 中国电建集团昆明勘测设计研究院有限公司 | Automatic arrangement method for photovoltaic arrays of complex terrains of mountain areas of highland |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104268368A (en) * | 2014-08-22 | 2015-01-07 | 湖北省电力勘测设计院 | Optimal construction method of photovoltaic power station |
| CN106446399A (en) * | 2016-09-20 | 2017-02-22 | 江苏佳讯太阳能电力设计院有限公司 | Method for cable layout and terminal device for cable layout |
| CN110266055A (en) * | 2019-07-31 | 2019-09-20 | 合肥阳光新能源科技有限公司 | A kind of photovoltaic power station arrangement method, device and photovoltaic plant |
| CN110264017A (en) * | 2019-06-28 | 2019-09-20 | 合肥阳光新能源科技有限公司 | A kind of photovoltaic component arrangement method and photovoltaic array build the method for determination |
| CN110826800A (en) * | 2019-11-05 | 2020-02-21 | 合肥阳光新能源科技有限公司 | Photovoltaic power station layout method and device |
| CN110851945A (en) * | 2019-08-08 | 2020-02-28 | 上海电气分布式能源科技有限公司 | Photovoltaic array arrangement method and photovoltaic array arrangement scheme automatic generation system |
| CN111353201A (en) * | 2018-12-21 | 2020-06-30 | 远景能源（南京）软件技术有限公司 | Method for arranging photovoltaic modules based on grids |
| CN111783298A (en) * | 2020-07-01 | 2020-10-16 | 湖南红太阳新能源科技有限公司 | Intelligent photovoltaic design system and design method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180089339A1 (en) * | 2016-09-27 | 2018-03-29 | Aurora Solar Inc. | Photovoltaic Installation Design Systems |
-
2020
- 2020-10-19 CN CN202011116975.2A patent/CN112287529B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104268368A (en) * | 2014-08-22 | 2015-01-07 | 湖北省电力勘测设计院 | Optimal construction method of photovoltaic power station |
| CN106446399A (en) * | 2016-09-20 | 2017-02-22 | 江苏佳讯太阳能电力设计院有限公司 | Method for cable layout and terminal device for cable layout |
| CN111353201A (en) * | 2018-12-21 | 2020-06-30 | 远景能源（南京）软件技术有限公司 | Method for arranging photovoltaic modules based on grids |
| CN110264017A (en) * | 2019-06-28 | 2019-09-20 | 合肥阳光新能源科技有限公司 | A kind of photovoltaic component arrangement method and photovoltaic array build the method for determination |
| CN110266055A (en) * | 2019-07-31 | 2019-09-20 | 合肥阳光新能源科技有限公司 | A kind of photovoltaic power station arrangement method, device and photovoltaic plant |
| CN110851945A (en) * | 2019-08-08 | 2020-02-28 | 上海电气分布式能源科技有限公司 | Photovoltaic array arrangement method and photovoltaic array arrangement scheme automatic generation system |
| CN110826800A (en) * | 2019-11-05 | 2020-02-21 | 合肥阳光新能源科技有限公司 | Photovoltaic power station layout method and device |
| CN111783298A (en) * | 2020-07-01 | 2020-10-16 | 湖南红太阳新能源科技有限公司 | Intelligent photovoltaic design system and design method |
Non-Patent Citations (2)
| Title |
|---|
| 大型光伏电站方阵优化设计研究;周长友 等;华电技术;68-72+80 * |
| 屋顶太阳能光伏组件方阵的计算机辅助设计研究;闫泓锦 等;现代建筑电气;5-8+15 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112287529A (en) | 2021-01-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112287529B (en) | Automatic arrangement method for photovoltaic array and automatic arrangement method for photovoltaic power station | |
| Selim et al. | Efficient optimization technique for multiple DG allocation in distribution networks | |
| Pillai et al. | Design and testing of two phase array reconfiguration procedure for maximizing power in solar PV systems under partial shade conditions (PSC) | |
| Belhachat et al. | Modeling, analysis and comparison of solar photovoltaic array configurations under partial shading conditions | |
| CN107133425B (en) | Method for automatically arranging photovoltaic square matrix in complex terrain | |
| Yadav et al. | Conventional and advanced PV array configurations to extract maximum power under partial shading conditions: A review | |
| KR102509670B1 (en) | String connection method and apparatus of solar modules, device, and storage medium | |
| Krishna et al. | Enhancement of maximum power output through reconfiguration techniques under non-uniform irradiance conditions | |
| US11494530B2 (en) | Solar farm design system | |
| CN112434408B (en) | Photovoltaic power station cable length optimization method, cable selection method and device | |
| CN111371402A (en) | Layout method, device and equipment of convergence equipment in photovoltaic power station and storage medium | |
| CN116914709A (en) | Method, device, equipment and medium for suppressing direct current induced voltage | |
| CN109672197A (en) | A kind of probabilistic storage energy operation optimization method of consideration distributed generation resource power output | |
| Gautam et al. | A Review on Various Mathematical Based Static Reconfiguration Strategies to Improve Generated Power under Partial Shading Conditions | |
| CN115037223A (en) | Automatic planning method and device for photovoltaic square matrix and electronic equipment | |
| CN112800547A (en) | Layout optimization method and device for motor controller of electric vehicle and storage medium | |
| Anjum et al. | Augmenting Power Efficiency by virtue of a Novel Physical Reconfiguration of Solar Photovoltaic Array in tandem with experimental validation | |
| Rosselan et al. | Sizing optimization of large-scale grid-connected photovoltaic system using dolphin echolocation algorithm | |
| CN115642597B (en) | Distributed photovoltaic bearing capacity calculation method and device | |
| CN1755570A (en) | Method of controlling photovoltaic power generation system | |
| CN112926183B (en) | Arrangement processing method, device and system of photovoltaic module array and electronic equipment | |
| CN115018151B (en) | Multi-station fusion site expansion planning method | |
| CN117879047B (en) | Optimization method and system for distributed photovoltaic access distribution network | |
| CN107506530A (en) | A kind of power converter topology's method | |
| CN112436439B (en) | Method and device for laying cable bridge of photovoltaic power station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: High tech Zone of Hefei city of Anhui Province in 230088 Lake Road No. 2 Applicant after: Sunshine New Energy Development Co.,Ltd. Address before: 230088 6th floor, R & D center building, no.1699 Xiyou Road, high tech Zone, Hefei City, Anhui Province Applicant before: HEFEI SUNGROW RENEWABLE ENERGY SCI. & TECH. Co.,Ltd. Address after: High tech Zone of Hefei city of Anhui Province in 230088 Lake Road No. 2 Applicant after: Sunshine New Energy Development Co.,Ltd. Address before: High tech Zone of Hefei city of Anhui Province in 230088 Lake Road No. 2 Applicant before: Sunshine New Energy Development Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |